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Ford Model 77 Assembly Instructions for
1.
Insert the Boring Bar (DMBB-67) into the Drilling Machine (Fig . 1) .
2.
Select the Adapter (DMA) that matches the outlet threads of the Corporation Stop and attach it to the bottom
of the Drilling Machine (Fig . 2) .
3.
Follow the drilling procedure as outlined on page 6 . When a Shell Cutter is cutting into the pipe, neVeR
reverse the direction of rotation or the carbide teeth will be destroyed. AlWAYS TuRn ClOCKWISe.
When making dry taps on Cast Iron, Ductile or A/C pipe, the 1/4" "Split Tipped" Pilot Drill should be used for
coupon retention .
Fig. 1
Insert the Boring Bar into the
Drilling Machine .
Fig. 2
Select the proper Drilling Machine
Adapter and attach it to the
Drilling Machine .
Fig. 3
Attach the Shell Cutter to the end
of the Boring Bar .
The following is a quotation from the uni-Bell "Tapping guide for PVC Pressure Pipe" uni-Pub-8-88, page 10.
PVC is easy to machine, so it is a temptation to overfeed the cutter because it is comparatively easy to turn the ratchet handle . The principle is to
allow the cutter to work as a cutter . Rotate the ratchet handle one complete turn for every 1/8 turn of the feed yoke (approx . 1" (25mm) movement
of feed nut to each 1/4 turn of the ratchet handle) .
The feed rate should be reduced in cold weather . Judge the correct feed rate by "finger pull" – the effort should be about the same as that used to
open a desk drawer . This rule of thumb applies in any temperature .
1-1/4", 1-1/2" and 2" Shell Cutters
For drilling Cast Iron, Ductile, PVC and A/C Pipe
AB-9
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